Files
react/compiler/apps/playground
Wesley LeMahieu b6c0aa8814 [compiler]: fix link compiler & 4 broken tests from path containing spaces (#33409)
## Summary

Problem #1: Running the `link-compiler.sh` bash script via `"prebuild"`
script fails if a developer has cloned the `react` repo into a folder
that contains _any_ spaces. 3 tests fail because of this.

<img width="1003" alt="fail-1"
src="https://github.com/user-attachments/assets/1fbfa9ce-4f84-48d7-b49c-b6e967b8c7ca"
/>
<img width="1011" alt="fail-2"
src="https://github.com/user-attachments/assets/0a8c6371-a2df-4276-af98-38f4784cf0da"
/>
<img width="1027" alt="fail-3"
src="https://github.com/user-attachments/assets/1c4f4429-800c-4b44-b3da-a59ac85a16b9"
/>

For example, my current folder is:
`/Users/wes/Development/Open Source Contributions/react`

The link compiler error returns:
`./scripts/react-compiler/link-compiler.sh: line 15: cd:
/Users/wes/Development/Open: No such file or directory`

Problem #2: 1 test in `ReactChildren-test.js` fails due the existing
stack trace regex which should be lightly revised.

`([^(\[\n]+)[^\n]*/g` is more robust for stack traces: it captures the
function/class name (with dots) and does not break on spaces in file
paths.
`([\S]+)[^\n]*/g` is simpler but breaks if there are spaces and doesn't
handle dotted names well.

Additionally, we trim the whitespace off the name to resolve extra
spaces breaking this test as well:

```
-     in div (at **)
+     in div  (at **)
```

<img width="987" alt="fail-4"
src="https://github.com/user-attachments/assets/56a673bc-513f-4458-95b2-224129c77144"
/>

All of the above tests pass if I hyphenate my local folder:
`/Users/wes/Development/Open-Source-Contributions/react`

I selfishly want to keep spaces in my folder names. 🫣

## How did you test this change?

**npx yarn prebuild**

Before:
<img width="896" alt="Screenshot at Jun 01 11-42-56"
src="https://github.com/user-attachments/assets/4692775c-1e5c-4851-9bd7-e12ed5455e47"
/>

After:
<img width="420" alt="Screenshot at Jun 01 11-43-42"
src="https://github.com/user-attachments/assets/4e303c00-02b7-4540-ba19-927b2d7034fb"
/>

**npx yarn test**
**npx yarn test
./packages/react/src/\_\_tests\_\_/ReactChildren-test.js**
**npx yarn test -r=xplat --env=development --variant=true --ci
--shard=3/5**

Before:
<img width="438" alt="before"
src="https://github.com/user-attachments/assets/f5eedb22-18c3-4124-a04b-daa95c0f7652"
/>

After:
<img width="439" alt="after"
src="https://github.com/user-attachments/assets/a94218ba-7c6a-4f08-85d3-57540e9d0029"
/>

<img width="650" alt="Screenshot at Jun 02 18-03-39"
src="https://github.com/user-attachments/assets/3eae993c-a56b-46c8-ae02-d249cb053fe7"
/>

<img width="685" alt="Screenshot at Jun 03 12-53-47"
src="https://github.com/user-attachments/assets/5b2caa33-d3dc-4804-981d-52cb10b6226f"
/>
2025-06-09 08:40:27 -07:00
..
2025-04-15 12:52:43 -04:00
2025-04-24 13:50:03 -04:00

React Compiler Playground

An interactive playground to demonstrate, test, and have fun with React Compiler.

Setup

# Build React Compiler from source and install Playground dependencies.
$ yarn

# Or similarly
$ npm install

Development

# Start the local development server with
$ yarn dev

# Or
$ npm run dev

# Rerun the following (in a separate terminal window) when React Compiler
# is changed locally to keep Playground in sync.
$ yarn

Testing

# Install playwright browser binaries
$ npx playwright install --with-deps
# Run tests
$ yarn test

Deployment

This project has been deployed using Vercel. Vercel does the exact same thing as we would locally, by running yarn at the install step in the Playground directory to build React Compiler from source and symlink it as its dependency. This means that Playground is automatically deployed on every push and pull requests will reflect the behaviors of React Compiler of that commit.